ACUS03 KWNS 081902 SWODY3 SPC AC 081901 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0201 PM CDT Wed Jul 08 2026 Valid 101200Z - 111200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM THE CENTRAL HIGH PLAINS TO THE TENNESSEE VALLEY... ...SUMMARY... Clusters of thunderstorms accompanied by a risk for damaging wind gusts may evolve in a corridor across parts of the central and southern Great Plains into the Tennessee Valley Friday afternoon and evening. ...Central/Southern Plains to OH/TN Valleys... Weak upper troughing will shift east from the Midwest to the Atlantic coast on Friday. Meanwhile, a convectively enhanced midlevel disturbance within larger-scale upper ridging over the Plains may move across portions of the central/southern Plains to the Mid-MS Valley. Additionally, it is possible an MCV may be located in the vicinity of the Lower OH Valley, related to remnant convection from the Day 2/Thursday period. Within this corridor from eastern CO through portions of TN/KY, a seasonally moist and unstable airmass will be in place. One or more outflow boundaries are also likely to overlap this zone. Modestly enhanced westerly flow atop this moist/unstable corridor may promote several thunderstorm clusters capable of producing mainly strong to severe wind gusts. Where these clusters develop will largely be driven by mesoscale processes and convective evolution in the Day 2/Thursday period. Given uncertainty in location of various surface features at this time frame, will maintain a broad Marginal (level 1 of 5) risk area for Friday afternoon/evening from the central High Plains to the Lower OH and TN Valleys. ..Leitman.. 07/08/2026 $$